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This study presents a control design approach for a zero bias active magnetic bearing system. A nonlinear control approach based on a control current switching rule is studied experimentally for an energy storage flywheel active magnetic bearing(AMB) system. The equation of motion for the rigid rotor-AMB system is transformed to have a decentralized structure for the control design. To compute nonlinear control currents, a servo backstepping control is designed for each axis of the AMB. The proposed approach is experimentally verified using a high speed digital signal processor(DSP).

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Booktitle: Proceedings of ISMB9